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Modelling stratospheric chemistry in a global three-dimensional chemical transport model

Abstract

Numerical modelling of atmospheric chemistry aims to increase the understanding of the characteristics, the behavior and the evolution of atmospheric composition. These topics are of utmost importance in the study of climate change. The multitude of gases and particulates making up the atmosphere and the complicated interactions between them affect radiation transfer, atmospheric dynamics, and the impacts of anthropogenic and natural emissions. Chemical processes are fundamental factors in global warming, ozone depletion and atmospheric pollution problems in general. Much of the prevailing work on modelling stratospheric chemistry has so far been done with 1- and 2-dimensional models. Carrying an extensive chemistry parameterisation in a model with high spatial and temporal resolution is computationally heavy. Today, computers are becoming powerful enough to allow going over to 3-dimensional models. In order to concentrate on the chemistry, many Chemical Transport Models (CTM) are still run off-line, i.e. with precalculated and archived meteorology and radiation. In chemistry simulations, the archived values drive the model forward in time, without interacting with the chemical evolution. This is an approach that has been adopted in stratospheric chemistry modelling studies at the Finnish Meteorological Institute. In collaboration with the University of Oslo, a development project was initiated in  More>>
Authors:
Rummukainen, M [1] 
  1. Finnish Meteorological Inst., Sodankylae (Finland). Sodankylae Observatory
Publication Date:
Dec 31, 1995
Product Type:
Conference
Report Number:
SA-PUB-6/95; CONF-9508257-
Reference Number:
SCA: 540120; PA: FI-97:003086; EDB-97:028818; SN: 97001727845
Resource Relation:
Conference: SILMU conference on climate change, Helsinki (Finland), 22-25 Aug 1995; Other Information: DN: SILMU Research Programme; PBD: 1995; Related Information: Is Part Of International conference on past, present and future climate. Proceedings; Heikinheimo, P. [ed.]; PB: 490 p.
Subject:
54 ENVIRONMENTAL SCIENCES; ATMOSPHERIC CHEMISTRY; STRATOSPHERE; THREE-DIMENSIONAL CALCULATIONS; COMPUTERIZED SIMULATION; CLIMATIC CHANGE
OSTI ID:
428568
Research Organizations:
Academy of Finland, Helsinki (Finland)
Country of Origin:
Finland
Language:
English
Other Identifying Numbers:
Other: ON: DE97724948; ISBN 951-37-1721-6; TRN: FI9703086
Availability:
OSTI as DE97724948
Submitting Site:
FI
Size:
pp. 359-362
Announcement Date:
Feb 20, 1997

Citation Formats

Rummukainen, M. Modelling stratospheric chemistry in a global three-dimensional chemical transport model. Finland: N. p., 1995. Web.
Rummukainen, M. Modelling stratospheric chemistry in a global three-dimensional chemical transport model. Finland.
Rummukainen, M. 1995. "Modelling stratospheric chemistry in a global three-dimensional chemical transport model." Finland.
@misc{etde_428568,
title = {Modelling stratospheric chemistry in a global three-dimensional chemical transport model}
author = {Rummukainen, M}
abstractNote = {Numerical modelling of atmospheric chemistry aims to increase the understanding of the characteristics, the behavior and the evolution of atmospheric composition. These topics are of utmost importance in the study of climate change. The multitude of gases and particulates making up the atmosphere and the complicated interactions between them affect radiation transfer, atmospheric dynamics, and the impacts of anthropogenic and natural emissions. Chemical processes are fundamental factors in global warming, ozone depletion and atmospheric pollution problems in general. Much of the prevailing work on modelling stratospheric chemistry has so far been done with 1- and 2-dimensional models. Carrying an extensive chemistry parameterisation in a model with high spatial and temporal resolution is computationally heavy. Today, computers are becoming powerful enough to allow going over to 3-dimensional models. In order to concentrate on the chemistry, many Chemical Transport Models (CTM) are still run off-line, i.e. with precalculated and archived meteorology and radiation. In chemistry simulations, the archived values drive the model forward in time, without interacting with the chemical evolution. This is an approach that has been adopted in stratospheric chemistry modelling studies at the Finnish Meteorological Institute. In collaboration with the University of Oslo, a development project was initiated in 1993 to prepare a stratospheric chemistry parameterisation, fit for global 3-dimensional modelling. This article presents the parameterisation approach. Selected results are shown from basic photochemical simulations}
place = {Finland}
year = {1995}
month = {Dec}
}